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Luxembourg IBAN Validator (LU, length 20)
x402
Luxembourg IBAN Validator (LU, length 20) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-02).
Validates whether a given string is a structurally correct, mod-97-valid Luxembourg (LU) IBAN of exactly 20 characters.
Price / call$0.006
Success—
StatusUnknown
How this service works
Call when an agent needs whether an IBAN is a mod-97-valid LU number of length 20. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-iban-lu first.
Output
Returns a boolean or structured result indicating whether the submitted string is a valid Luxembourg (LU) IBAN: 20 characters long and passing the mod-97 checksum algorithm. May include the validated IBAN, a validity flag, and possibly an error reason if invalid.
Example use cases
Payment recipient account verification
“Before I wire money to our Luxembourg supplier, can you verify that LU43 0015 7455 4800 0000 is a valid LU IBAN so we don't send funds to a bad account?”
Onboarding form IBAN field check
“A user just entered LU12 0010 0012 3456 7891 as their bank account — can you confirm it's a properly formatted, mod-97-valid Luxembourg IBAN before we save it?”
Batch invoice data cleanup
“I have a Luxembourg IBAN from an old invoice: LU74 0019 4006 4475 1234 — can you tell me if it's structurally valid before I use it to set up a payment?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/check-iban-lu?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to validate a Luxembourg (LU) IBAN of exactly 20 characters using the mod-97 algorithm. Prefer the free sandbox endpoint POST /v1/sandbox/check-iban-lu first for testing. For other country IBANs, use the corresponding sibling endpoints (e.g. NL for Netherlands, SE for Sweden, PT for Portugal). This endpoint is appropriate when operating in a paid production environment and a Luxembourg IBAN must be definitively validated.
Side effects
- IBAN too short or too long (must be exactly 20 characters) — returns invalid
- Non-LU country code prefix — may return invalid or error
- Mod-97 checksum fails — returns invalid
- Malformed or empty input — may return 400 or validation error
- Payment failure (insufficient USDC) — 402 response blocking the call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | — | JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN. |
| value | string | Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar. |
| schema | — | JSON Schema document for schema-check SKUs. Omit it on string checks. |
Tags
x402
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